A can do a work in 12 days, B can do it in 20 days and C in 15 days. If they work together the number of days needed to complete the work is:
A10
B3
C6
D5
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Related Questions:
A, B, C can together complete the work in 12 days. If A is thrice faster than B, and B is twice faster than C , B alone can do the work in :
A alone can complete a work in 6 days and B alone can complete the same work in 8 days. In how many days both A and B together can complete the same work?
A certain number of persons can finish a task in 85 days. If there were 15 persons more, it would have taken 25 days less for the task to be completed. How many persons are there in the beginning?
6 പേർ 12 ദിവസം കൊണ്ട് ഒരു ജോലി പൂർത്തിയാക്കുന്നു. എങ്കിൽ 8 പേർ എത്ര ദിവസംകൊണ്ട് ആ ജോലി പൂർത്തീകരിക്കും ?
10 men and 6 women can do a piece of work in 4 days, whereas 12 men and 18 women can do it in 2 days. Find the ratio of the daily work done by a man to that done by a woman, respectively